National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Caldwell, Essex County Airport (KCDW)

Lat: 40.88°NLon: 74.28°WElev: 171ft.

A Few Clouds

32°C

89°F

Humidity 55%
Wind Speed S 6 km/h
Barometer 1016.9 mb (30.02 in)
Dewpoint 22°C (71°F)
Visibility 16 km
Heat Index35°C (95°F)
Last update 15 Jul 5:53 pm EDT
Extended Forecast for

Mahwah NJ

Heat Advisory July 16, 11:00am until July 17, 10:00pm
Click here for hazard details and duration
Heat Advisory

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 8pm. Patchy fog before 2am, then patchy fog after 3am. Otherwise, partly cloudy, with a low around 22. Calm wind.

    Low: 22 °C

    Slight Chance
    T-storms then
    Patchy Fog

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms, mainly after 5pm. Partly sunny, with a high near 32. Heat index values as high as 37. Calm wind becoming south 5 to 10 km/h in the afternoon.

    High: 32 °C

    Mostly Sunny
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 23. Calm wind.

    Low: 23 °C

    Chance
    T-storms then
    Chance
    Showers

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 32. Heat index values as high as 39. Southwest wind 8 to 11 km/h. Chance of precipitation is 70%. New rainfall amounts between 5 and 7.5 mm possible.

    High: 32 °C

    Showers
    Likely

  • Thursday Night

    Thursday Night: A chance of thunderstorms before 8pm. Partly cloudy, with a low around 23. Southwest wind 5 to 8 km/h. Chance of precipitation is 30%.

    Low: 23 °C

    Chance
    T-storms then
    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 31.

    High: 31 °C

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 18.

    Low: 18 °C

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 29.

    High: 29 °C

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of showers after 2am. Mostly cloudy, with a low around 19.

    Low: 19 °C

    Mostly Cloudy
    then Chance
    Showers

Detailed Forecast

Tonight
A 20 percent chance of showers and thunderstorms before 8pm. Patchy fog before 2am, then patchy fog after 3am. Otherwise, partly cloudy, with a low around 22. Calm wind.
Wednesday
A 30 percent chance of showers and thunderstorms, mainly after 5pm. Partly sunny, with a high near 32. Heat index values as high as 37. Calm wind becoming south 5 to 10 km/h in the afternoon.
Wednesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 23. Calm wind.
Thursday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 32. Heat index values as high as 39. Southwest wind 8 to 11 km/h. Chance of precipitation is 70%. New rainfall amounts between 5 and 7.5 mm possible.
Thursday Night
A chance of thunderstorms before 8pm. Partly cloudy, with a low around 23. Southwest wind 5 to 8 km/h. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 31.
Friday Night
Mostly clear, with a low around 18.
Saturday
Mostly sunny, with a high near 29.
Saturday Night
A 30 percent chance of showers after 2am. Mostly cloudy, with a low around 19.
Sunday
A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 29. Chance of precipitation is 60%.
Sunday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 19. Chance of precipitation is 60%.
Monday
Mostly sunny, with a high near 29.
Monday Night
Partly cloudy, with a low around 18.
Tuesday
Mostly sunny, with a high near 28.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mahwah NJ
 41.07°N 74.18°W (Elev. 374 m)
Last Update:
3:16 pm EDT Jul 15, 2025
Forecast Valid:
6pm EDT Jul 15, 2025-6pm EDT Jul 22, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation